On the damp morning of 12 May 1937, the day of the Coronation, Isaac Shoenberg arrived with dignitaries of the Seldon Commission to see the location of the three Marconi-EMI cameras that would be respndible for televising the procession.

Camera No1 was positioned at Apsley Gate at street level and was operated by John Bliss. This camera would be responsible for capturing The Gold State Coach with the King and Queen inside as they passed by under the gate. Purely as a backup (in case the camera failed) Marconi-EMI placed a conventional film camera behind Bliss which filmed him in action. 

Camera No.2, operated by Harry Tonge, and Camera No.3 operated by Roland Price were placed atop specially contructed wooden plinth extensions on the face of the arch to capture an elevated view of the Coronation Procession as it passed by.

The BBC Radio Times for the week of the Coronation highlighted the fact that it was being televised. The problem was only 2,000 or so television sets had been sold by 12 May 1937.

The route of the Coronation procession on 12 May 1937 passed right through the arch of Apsley Gate at Hyde Park Corner, and was an ideal location for the three Marconi-EMI cameras to capture everything as it passed by.

Camera No.2 operated by Harry Tonge being demonstrated to a member of the Selsdon Commission who had authorised the televising of the Coronation procession.

At the moment The Gold State Coach with King George VI and Queen Elizabeth passed by his position, camerman John Bliss points his Marconi-EMI camera No.1 at the carriage and the King obliged by giving a wave.

A BBC documentary showing the televising of the Coronation.

That exact same moment captured from a few feet further away, clearly showing Camera No.1 operated by John Bliss filming The Gold State Coach, while Camera No.2 operated by Harry Tonge on the plinth of Apsley House captured a higher view.

And this is how the 2,000 lucky television owners would have seen the live broadcast on 12 May 1937.